:root {
  --paper: #f3f6f7;
  --ink: #15242b;
  --ink-soft: #49606b;
  --card: #ffffff;
  --line: #d0dde4;
  --accent: #00738b;
  --food: #2a9d3f;
  --weasel: #1f4c74;
  --path: #7b8f9b;
  --notice-bg: #eef8ff;
  --notice-line: #9ec5da;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at 85% 0%, #dceff3, var(--paper) 46%);
  color: var(--ink);
  font: 400 16px/1.5 "Lora", "Helvetica Neue", sans-serif;
}

.layout {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 14px 64px;
}

.article {
  background: color-mix(in srgb, var(--card) 95%, #f3ffff 5%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px 24px;
  box-shadow: 0 10px 30px rgba(5, 40, 52, 0.08);
}

.hero {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font: 600 0.74rem/1 system-ui, sans-serif;
  margin: 0;
}

.hero h1 {
  margin: 4px 0 6px;
  font: 700 clamp(1.95rem, 1.6rem + 1.45vw, 2.8rem)/1.05 "Rokkitt", "Helvetica Neue", sans-serif;
}

.lead {
  margin: 0;
  color: var(--ink-soft);
}

h2, h3 {
  font-family: "Rokkitt", "Helvetica Neue", sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

h2 { margin: 24px 0 8px; font-size: 1.85rem; }
h3 { margin: 22px 0 8px; font-size: 1.42rem; }

p, li { color: #1e3348; margin: 0 0 0.88rem; }
.article-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}
.article-image.alignleft {
  float: left;
  margin: 0.2rem 1rem 0.5rem 0;
}
.article-image.alignright {
  float: right;
  margin: 0.2rem 0 0.5rem 1rem;
}
ol {
  list-style: none;
  counter-reset: ordered-list;
  padding-left: 0;
  margin-left: 0;
  clear: both;
}
ol > li {
  counter-increment: ordered-list;
  position: relative;
  padding-left: 2rem;
}
ol > li::before {
  content: counter(ordered-list) ". ";
  position: absolute;
  left: 0;
  color: #1e3348;
  font-variant-numeric: tabular-nums;
}
section { margin-top: 0.4rem; }
section::after {
  content: "";
  display: block;
  clear: both;
}

.notice {
  margin: 6px 0 20px;
  padding: 0.6rem 0.85rem;
  border-left: 4px solid var(--notice-line);
  background: var(--notice-bg);
  border-radius: 6px;
}

.notice p {
  margin: 0;
  color: #214859;
}

.demo-card {
  margin: 8px 0 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fcfeff;
}

.control-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 6px 0;
}

label { font-weight: 600; }

input[type="text"],
input[type="number"] {
  border: 1px solid #b6cad4;
  border-radius: 7px;
  padding: 6px 8px;
  background: #fff;
  color: #1a2f39;
  font: 0.95rem/1.3 ui-sans-serif, system-ui, sans-serif;
}

input[type="text"] { min-width: 320px; width: min(100%, 560px); }
input[type="number"] { width: 92px; }

button {
  border: 1px solid #a7bdc8;
  border-radius: 7px;
  padding: 6px 10px;
  background: #f0fbff;
  color: #17313b;
  cursor: pointer;
}

button:hover { border-color: var(--accent); }
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 70%, white 30%);
  outline-offset: 1px;
}

.console {
  width: 100%;
  min-height: 240px;
  resize: both;
  border: 1px solid #bdd0da;
  border-radius: 8px;
  padding: 10px;
  background: #f9fdff;
  color: #0f2333;
  font: 12px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.canvas-shell {
  border: 1px solid #bdd0da;
  border-radius: 8px;
  overflow: auto;
  background: #f6fcff;
  max-width: 540px;
}

canvas.field {
  display: block;
  width: min(100%, 500px);
  height: auto;
}

.metrics {
  color: #2e4b56;
  font: 0.93rem/1.35 ui-sans-serif, system-ui, sans-serif;
}

.badge {
  display: inline-block;
  border: 1px solid #b8ccd6;
  border-radius: 999px;
  padding: 2px 8px;
  font: 0.79rem/1.2 ui-sans-serif, system-ui, sans-serif;
  color: #25424e;
  background: #f7fcff;
}

.article p + .demo-card {
  margin-top: 12px;
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .article { padding: 12px; }
  h2 { font-size: 1.48rem; }
  h3 { font-size: 1.25rem; }
  .article-image.alignleft,
  .article-image.alignright {
    float: none;
    margin: 0 0 0.6rem;
  }
  input[type="text"] { min-width: 220px; }
  .console { min-height: 180px; }
}